Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8f971acd8021d9d…

MALICIOUS

PDF

76.7 KB Created: 2021-04-19 07:07:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: d283e52dd76cafc2d2249c0968b0ec58 SHA-1: 97e983b4eebe19415acfbf86a7b6193957d09a2c SHA-256: e8f971acd8021d9dea9b97a8ea2be3b9e73535552acdff192438ecdb8ec3732c
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://botokaw.ru/strik?utm_term=tabla+periodica+descarga+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365598/normal_6023e35bedc88.pdfIn PDF document text
    • https://cdn.sqhk.co/mibupufek/gjgeJGJ/70908446113.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369334/normal_5fd61e9a1d8f9.pdfIn PDF document text
    • http://dapajibidamazed.mypressonline.com/affairs_cloud_current_affairs_july.pdfIn PDF document text
    • http://bosemefawixuwov.mypressonline.com/jepasixamabibalezakudob.pdfIn PDF document text
    • https://cdn.sqhk.co/miburixegapu/hhpDngc/bubble_letters_m.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472783/normal_6043e0fe40e15.pdfIn PDF document text
    • https://cdn.sqhk.co/noperizapewo/igigSji/sojixab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417306/normal_60436cf641b4a.pdfIn PDF document text
    • https://cdn.sqhk.co/disumuneriva/cigrPhj/vomit_comet_cost_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/bomunerafoju/geDjfji/celluloid_malayalam_movie_songs_320kbps.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496816/normal_60176b615fe09.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414357/normal_5fdb162fd45c2.pdfIn PDF document text
    • https://cdn.sqhk.co/gupimupiset/gc4jehf/cbse_10th_compartment_exam_date_sheet_2018.pdfIn PDF document text
    • https://cdn.sqhk.co/vavewiminiv/4jjhdgd/commander_legends_spoilers_precon.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/executive_summary_of_a_technical_report.pdfIn PDF document text
    • https://s3.amazonaws.com/gitipelut/ammi_ammi_telugu_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/lovomijelun/small_baby_telugu_song.pdfIn PDF document text
    • https://s3.amazonaws.com/defipedibe/princpio_da_abstrao_dos_ttulos_de_crdito.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/find_differences_in_2_excel_spreadsheets.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ecb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECB5 5412 bytes
SHA-256: 8797c296447ff7451a49502616eeed86eafb86feebe460a6e2389cb7e4264b97
font_01_sfnt_off0000ff22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF22 12400 bytes
SHA-256: be69c7d9695b4b9e673e367499c1d37b394372a1e60c0791bee0a9ef2ea83fbe

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